code: def encode(self, value):
      _Tracker().encode_called = True
      return super().encode(value)
  
file_path: data-validation/tensorflow_data_validation/types_test.py
imports: from absl.testing import absltest
  import apache_beam
  from apache_beam.testing import util
  import pyarrow
  from tensorflow_data_validation import types
label_desc: Use image node_id 1 for calling the _TrackedCoder obj's underlying member method code with example usage: obj.encode(value) and returns: super